5.9 Cummins AFE Twisted Steel T4 Exhaust Manifold

The AFE 48-32019 Twisted Steel T4 Exhaust Manifold is built in the USA and provides quicker turbo boost and improved throttle response. This product is made from 1-3/4" head pipes that are stepped to 2" mandrel bent 304 stainless steel tubing and a 1/2" laser cut T4 divided flange. The Twisted Steel design of this exhaust manifold significantly improves the horsepower and torque of your 5.9 Cummins engine.